Pump



(June 24, 1924. I 1,498,648

P. E. DUMOND PUMP Filed may '7, 1920 5 Sheets-Sheet l ATTORNEY v June 24 1924. f L4988 PIE. DUMOND PUMP Filed May 7, 1920 5 Sheets-Sheet a;

03 N H Q in lune 24 1 924.

' P. E. DUMOND PUMP Filed May '7. 1920 5 "Sheets-Sheet 5 And/Mr] l atented June 24, 1924.

PERCY E. DUJVIOND, OF CLYMER,PENNSYLVANIA, ASSIGNOR T REMBRANDT PEI-LEE,

OF NEW YORK, 1\T. FY.

"PUMP.

Application'filed"May'7, 1920. Seria1 No.' 379,533.

L comprises a pump cylinder-osdillating'about new and useful Improvement in Pumps, ot

which the following is a specification.

The invention relates to pumps and more particularly in ce-rtainof its aspects to -rel0 viprocating piston or plunger pumps and to the means for controlling 'the inlet and o'ut-= a the cylinder-, and projects perpendicularly flow of the liquid being pumped.

Objects and advantages oi the invention are set forth in part hereinafter and in part will be obvious herefrom, or-maybelearn'e'd by practice with the invention; the same -be- 111g realized and attained through the instru 1 mentalities and combinations pointed out i the appended ClZLlIIlS. 2o

a center ad-jacent-one-end thereof, and a cylindrical, internallychambered head controlling the inflow and outflow of liquid to and from the cylinder, andoscillating-withthe' cylinder, its internal ch ambercommunicat- 00 ing contiuuously with the cylinder andrcommunicating with the inletand' outlet ports alternately on the up stroke and down stroke. In such preferred embodiment,- the' fluidcontrol head oscillatesconcentrically witlr' 35 therefrom. Its internal chamber is at one side of the center of oscillation and the inlet and outlet ports to the fluid pipes are dia-a metrically opposite the axis-of oscillation of thefluid flow controlling head, thereby pro viding a completeclosure on the dead centers of the pumps without additional-mecha- The invention consists in the novel parts,

scribed.

The accompanying drawings referred to trate one embodiment'of the invention, and

herein and constituting apart hereof,"illus-' together with the description, serve tOBX 1n the accompanying drawings,=sa1d'empump emnism. Certain of thedescribed features may be employed independently ofothers there of, within the broad scope of the invention, andother featuresof the invention, as preferably embodied, will be pointed out hereinafter.

Referring in detail to the embodiment of" the invention illustrated byway of example bodied form is shownas a-doulrle--reciproeating plunger or piston pump. The general structure comprises a frame having a"base= after described.

I standardsQand 3, and in the top part there- Fig. 4a is a vertical section taken online i-'l of Figs. 1 and'3 showing the piston on the earlypart of its upward or intake' stroke F i 5 is a similar view to Fig. 4L but 'showingthe piston midway ofits upwardfistroke;

conve in )ortsand assa 'es in the 1 umod c l a: 1

ated and'controlled by the -osc1llatorymovebase.

The invention comprises a pump cylinder" and piston and a cooperating chambered 5 head controlling the inflow and'outflow of fluid with respect to the cylinder, the fluid of'is journaled the dri-ving'orpo-wer sha-ft as The shaft 4 is rotated byany suitablepower applying means, such as a gear wheat-5.. Fixed on shaft 1 are two piston operating cranks 6 and 7 provided, respectively-withcrank pins 8 and'9. I a #195 In the preferred form of the invention,

. v -*the pump cylinders are of the oscillating section substantially i on line 7-7 of Fig. 3, showingthe-fluid seated in a shoulder 19 near the end of the cylinder. The cylinder is pivotally mounted and as the plunger or piston is reciprocated by the rotating crank, the cylinder will oscillate about its pivot.

Referring now more particularly to the details of the embodied form of fluid intake and expulsion mechanism and the control therefor, the lower end of the cylinder opens into a cylindrical and preferably conical head or mechanism, mounted concentrically with the cylinder and containing part of the intake or expulsion mechanism and cooperating with the remainder thereof.

Fixed to or integral with the inner or bottom end of the cylinder 16 is a cylindrical or conical head 20 provided with an interior passage 21 arranged transversely thereof and preferably at one side of its center of oscillation, and opening into the interior of cylinder 16 at 22. The end of passage 21 opposite the opening 22 is closed, and at its sides passage 21 opens in certain positions and at certain periods into the intake and outlet ports as will be later described. The

cylinder 16 and fluid controlling head 20 have their common pivotal mounting on a shaft 23, which shaft is supported or journaled ina bearing 24: in the machine base. The shaft 23 may serve for both of the cylinders 16, when the double form of pump is employed, and the construction on both sides may be the same.

Means for taking up wear in the fluid controlling mechanism are provided, and for this purpose the head 20, as already referred to, is made of conical form exteriorly and tapering inwardly into its mounting in the machine frame. A bushing 26 is provided for. the head 20 mounted in the machine frame and it is interiorly of conical form to fit the exterior of the fluid control head 20. The shaft 23 is provided at its ends with nuts 27 screw-threaded on shaft 21, and washers 28 may be interposed between the nuts and the cylinder structure. A cooperating device is provided to keep the piston in alinement with the cylinder, such as a plurality of removable and replace-able washers 29 may be mounted upon the crank pin 9. There is clearance 30 between the inner end of the fluid controlling head 20 and the machine frame. Thus by screwing up the nuts 27 upon the shaft 23, the exteriorly conical head 20 may be moved inwardly with respect to its conical bushing 26 to take up wear whenever required.

In the bushing 26 there are formed ports 33 and 34:, which preferably are substantially diametrically opposite to each other and thus likewise in alinement with the center of oscillation of the head 20. The port 33 in the bushing opens into a corresponding port 35 in the base of the pump, and this is the case on both sides of the double pump when the double structure is employed. The respective ports 35 open into a passage 36, and therefrom a port 37 opens into a pipe 38. The opposite ports at open into corresponding ports 39 formed in the base of the pump, and these ports open into a passage 40 in the base. Passage l0 communicates by a port 11 with a pipe 12. Either set of ports and passages and pipes may he used for the intake and the outlet or expulsion, dependent upon the direction of rotation of the pump. During the operation of the pump, the passage 21 in the member 20 is adapted to pass alternately into and out of communication with the ports 33 and 34, as will be hereinafter described, thereby controlling the inflow and outflow of the fluid through the pump.

The embodied form of means for guiding piston and cylinder together and preserving them in alinement comprises guide rods and a6, which rods have relatively long mountings in lugs 4:? formed on the upper part of the casting of the cylinder 16. The rods 45 and 46 are preferably screw-threaded into threaded openings in the lugs 47 on the cylinder castings. The rods are thus firmly and rigidly held in alinement. The upper end of the piston has fixed thereto diametrically separated lugs 48 and L9, extendii'ig outwardly therefrom, and having openings formed therein within which the rods 45 and 46 have a tight sliding fit. Thus the piston and cylinder are maintained in alinement during the reciprocatory and oscilla tory action of the pump.

The rods 45and 46 are, also utilized as the adjusting and securing means for the gland 17. This gland is provided with projecting lugs 50 and 51, within which the rods 45 have a snug but sliding fit. Nuts 52 and 53 are screw-threaded respectively on rods 45 and 46 and serve as the takeups for gland 17.

The manner of operation of the nism just described is substantially lows Shaft 4 is rotated by the gear 5, and cranks 6 and 7 actuate the plungers or pistons 15 of the pumps. If the double pump is employed, the pistons are in the opposite positions of their cycle with respect to each other. hen the crank is on the dead center the passage 21, owing to the ports 3 and 34 being on the diameter of the member 20, and the passage 21 being at one side thereof, as already described, is cut off from communication with both the ports and 34. i C

Fig. 4 of the drawings shows one of the pump pistons just after it has started upon the upper or intake stroke and with the crank a short distance away from the bottom dead center. The passage 21 in the fluid controlling member 20 is just passmechr as folill ing into communication-witlr the port 34 in the bushing 26, which opens into the intake passage 39 which communicates through the passage 40 with the fluid supply pipe 42 thereby admitting thewater into cylinder 16.

In Fig. 5 the piston 15 is shown about midway of its upward or intake stroke and traveling at maximum velocity, the cylinder 16 being at "the extreme or end ofits path of oscillation, and the passage 21 is in full and the passage 21 is shown partly opened into the outlet orexpnlsion port 33. thereby connecting the full cylinder 16 with the outlet or port 33, the passage 36 and the outlet or expulsion pipe 38. As before, when the piston is at half stroke and full speed, passage 21 is in full communication with the outlet port, and the cylinder is at the other extreme or limit of its 'oseil-: As the piston 15 reaches the latory travel. opposite or terminal end-10f its expulsion stroke, the passage 21 has been rocked back to a position cutting off both the inlet and outlet ports, as'already described in connection. with the intake port. double pump construction is used'asillustrated, the opposite pump is at the opposite positions inits cycle as will be readily understood.

One of the advantages of the present inven'tion is its capacity for pumping water .having particles or pieces of solid material therein, which material with pumps having the ordinary valve mechanism is likely to lodge under the valves. The pump thereafter of course runs with partial or total loss of its pumping capacity until an at tendant removes the lodged solid: material from the valves. The present invention is free from this defect, as the --rotating fluid controlling member 20 will either crush or dislodge such solid particles or pieces and consequently is not affected or incapacitated thereby. The present invention is thereby especially capacitated for reliable and efficient working in pumping water or other fluids containing such solid particles or pieces, as for instance in mines, where pieces of coal and rock are drawn up in drainage water and the like. and in such places where the pump works for long periods of time.

WVhen the without attendance orinspection. The fluid control mechanism is also of sturdy and substantial construction and smooth and easy :operation, and avoids the use 7 of springs, valve seats and other sources of annoyance, disarrangement and loss of st ficiency.

The invention in its broader aspects is not limitedto the specific mechanisms shown and described butdepartures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and. without sacrificingits chief advantages.

.l/Vhat I claim is .1. A-pump having in combination an oscillating cylinder, and projecting perpendicularly therefrom and oscillating con a chamber opening into the bottomI end of the cylinder and laterally apertured for the inflow and outflow of fluid into and" from the chamber and cylinder, means 1ueluding a shaft extending through the head and the end wall of the cylinder for holding the head in operative position, a smgle acting pistion within the cylinder and means for reciprocating the'piston and oscillating the cylinder.

2. A single acting pump having in combination an oscillating cylinder, and pro jecting perpendicularly therefrom and oscillating concentrically therewith a head provided with a'chamber opening directly into the bottom end of the cylinder and provided with a transverse aperture extending completely therethrough for the inflow 'cen-tri'callyi therewith a headprovided-with and outflow of fluid into and from the center of oscillation, a single acting piston within the cylinder and means for reciprocating the piston and oscillating the cylinder.

3. A. pump having in combination a frame, two oscillating pump cylinders having conical bearings in the frame, a single shaft on which the cylinders oscillate, and means on the shaft 'for pressing the cylinders into their bearings.

1. A. single-acting pump comprising a hollow base provided with inlet and outlet ports and with a'bearing provided with inlet-and outlet ports, an oscillating-cylinder provided with a. head projecting fromone end thereof, said head having a laterally extending passage therethrough adapted to register with said inlet and outlet ports in the bearings, the laterally extending passage opening directly into the interior of the cylinder, and means for oscillating the cyl with inlet and outlet ports, a pair of oscillating cylinders each provided with a head projecting from one end thereof, each head having a laterally extending passage therethrough adapted to register with respective inlet and outlet ports in the bearings, a common shaft extending through the base and through each of the said heads, for holding the heads in place in their bearings, and means for oscillating the cylinders.

6. A single-acting pump comprising a frame provided with a conical recess, an 0scillating cylinder provided with a conical head extending laterally from one end thereof, the head being provided with a laterally opening passage therein, which is open directly into the interior of the cylinder, and means for holding the conical head in place in the conical recess, a single-acting piston within the cylinder, and means for recipro eating the piston and oscillating the cylinder. I

7. A single-acting pump comprising a recessed frame, an oscillating cylinder provided with a chan'ibered, laterally extending head at one end thereof, the chamber of the head opening directly into the interior of the cylinder, and being further provided with a transverse passage in communication with said chamber and extending to opposite sides of its exterior surface, means for holding the said head in place in the recess of the frame a single-acting piston within the cylinder, and means for reciprocating the piston and oscillating the cylinder.

'8. A pump comprising a recessed frame,

an oscillating cylinder provided with a head extending laterally from one end thereof, he head being provided with a laterally opening passage therein in communication with the interior of the cylinder, and means, including a shaft extending through said head, for holding the head in position in the recess in the frame.

9. A single-acting pump (,Olnjl ising a frame provided with a recess, an oscillating cylinder provided with a head integral therewith and extending laterally from one end thereof, the head being provided with a laterally opening passage therein, the passage opening directly into the interior of the cylinder, means for holding the head in place in the recess in the frame a single-acting piston within the cylinder, and means for reciprocating the piston and oscillating the cylinder.

10. A. pump, comprising in combination a pair of oscillating cylinders, each of which has projecting laterally from one end thereof a chambered head, a hollow base member provided with oppositely facing, outwardly opening bearings, for respectively receiving the chambered heads, means for holding the chambered heads in position in their respective bearings, a singleacting piston in each cylinder and means for alternately oscillating the cylinders and pistons.

11. A pump comprising in combination a pair of oscillating cylinders, each of which ias projecting laterally therefrom a chambered head with an opening therein, a hollow base member provided with oppositely facing, outwardly opening bearings, for re spectively receiving the chambered heads, each bearing having an opening adapted to register with the opening in the corresponding chambered head for putting it in communication with the hollow base, means for holding the chambered heads in operative position in their respective bearings, a single-acting piston in each cylinder and means for alternately oscillating the cylinders and pistons.

12. A pump comprising in combination a frame having a recessed bearing, a ported bushing seated in the bearing, a pump cylinder provided with a head extending laterally therefrom, the head being provided with a laterally opening port for registering with the port in the bushing, and means for oscillating the cylinder.

13. A pump comprising in combination a frame having a recessed bearing, an interiorly conoidal bushing, provided with a lateral port, seated in the bearing, a pump cyl inder having an exteriorly conoidal head projecting laterally therefrom, the heac having a lateral port for registering with the port in the bushing, and means for oscillating the cylinder.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

. PERCY DUMOND.

Witnesses E. K. DAvIs, G. E. MEZGER; 

